well a friend of mine played the beta version and recommends the game, so I ordered the collectors edition (as planned :p)
I've been a fan of these kind of games and hope the 3rd Diablo game will as good as the other two
Important things I think that as a hack 'n slash game like this should have is mostly a good atmosphere (good for creative inspiration), and the gameplay to be as good as DI and DII.
I do fear though that things like the new potion system takes some control away. I'd like to use the items in my inventory whenever I like.